Adjustable chair



FIG. 1 is a right side elevational view of an adjustable chair showing my new design, the left side being a mirror image thereof;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIGS. 5-7 are right side elevational views thereof, respectively, with a leg rest portion thereof raised, a backrest portion thereof partly reclined, and the leg rest, seat and backrest portions thereof fully laid out in a horizontal portion. 

The ornamental design for an adjustable chair, as shown and described. 